Surfacing-machine.



A. BBVAN. SURPAGING MACHINE.

APPLICATION FILED MAY 20,1901

Patented Dec. 27, 1910. i

2 SHEETS-SHEET 1.

aweufoz A lemn der Bevan.

attouwq 19% in mo e a A. BEVAN.

SURFAGING MACHINE.

APPLICATION FILED MAY 20, 1907.

Patented Dec. 27, 1910,.

2 BHBETS-BHBBT 2.

luuepfo'n Alexander Be van.

19i hmooeo ALEXANDER BEVAN, OF PROVIDENCE, RHODE ISLAND.

SURFAGING-MACHINE.

Specification of Letters Patent.

Patented Dec. 27, 1910.

Application filed llay 20, 1907. Serial No. 374,560.

To all whom it may concern:

Be it known thatLALnxAnonn BEVAN, a citizen of the United States, residin at the city of Providence, in the county Providence and State of Rhode Island, have invented certain new and useful Improvements in Surfacing-Machines, of which the of the motor carriage.

following is a specification, reference being had therein to the accompanying draw ng.

This invention relates to improvements in f surfacing machines, which consist chiefly in providing apower driven roll covered with readily detachable abrasive or polishing material, and mounted in such a manner as to automatically adjust itself to the contour of the surface over which it is moved to produce the desired results. I

' The machine is especially designed to operate on old or new floors for the purpose of cleaning, smoothing or polishing the same effectively and economically according to the varying requirements. It may also be successfully employed to produce a plane, smooth and level surface on bowling alleys, if desired. As all. ordinary floors vary more or less from a plane or flat surface, owing to imperfect matching, irregularities of the supporting-timbers, etc.,' ithas beenfound desirable, in order to operate rapidly and economically in cleaning and smoothing floors, to provide means whereby the operating roll will automatically adjust itself to the irregularities of the floor, independent Economy and efliciency in operation are obtained also by the novel and effective means of securing the abrasive covering around the roll.

An important feature of the invention is the improved construction of the receptacle or roll casing which is provided for collecting the dust and waste material resulting from the work ofvthe machine.

A further object of .the invention is to provide an attachment whereby a plane and level surface on bowling alleys and the like may be produced.

Other novel and useful featureswillbe described and illustrated in the accompany ing drawings, and then included in the appended claims.

Like characters designate corresponding parts in all the views. I

Figure lis a planv view of the device showing-a portion of the roll casing broken away. -2- is aside elevation of the device omitting the driving mechanism showing the roll casing in section. Fig. 3 is an enlarged central sectional sideelevation through the pivot pin. Fig. 4 .is a longitudinal section of the operating roll and bearings on the vertical line through its axis. 5- is anenlarged end elevation of the two clamping. jaws. Fig. 6-"is afront elevation of an attachment to mydevice for leveling'the floor of a bowling alley. Fig. 7- is a side elevation of the same.

Referring to the drawings at '1 is aframe mounted on wheels 2-2 forming a suitable truck for carrying the motor 3. At 4: and 5 are two forwardly extending offset bars pivoted at one end to the motor bearings at 6 -6. Bolted to the opposite end of these ofi'set bars are the short plates 7 and 8, i

which plates are connected together by the cross bars 9 and 10. The bolt-holes 7 through these bars are elongated for the 12 and 13 are forwardly extending arms connected together by the cross bars 14 and 15, thewhole forming a frame for supporting the dressing roll hereinafter described. One end 'of each of these arms 12 and 13 is notched out at 16-16 at its upper edge to receive a corresponding projecting portion plates is slotted at 18-18 to receive a ball '17 onthe plates 7 and 8 forming overlap- I 19-19 which serves as a bearing to take the pressure dueto the pull of the-driving belt and at the same time to permit of an easy swiveling motion'of the roll frame on the pivot pin 11. The purpose of this construction is to afford the flexibility necessary to allow the dressing roll to automatically adjust itself to readily follow'any slight inequalities in the;fioor. y

Set-screws 2121 are threaded through the frame whereby said frame may be locked against aswiveling motion when it is re- .quired to produce a plane or flat surface instead of simply cleaning or smoothlng the same. The'swivel pin 11 extends forward through the said cross bars'l4 and 15 wherev by the extension arms and roll supporting a so 'to close said jaws together.

frames are pivotally joined to the crossbars 9 and 10, and loosely secured in position by meansof the nut 20, which is threaded onto said pivot. Theends of these arms 12 and 13 are provided with slotted portions 22 for the reception of the dressing roll bearings 23. A cotter pin 24, or the like, may be passed throu h the ends of these arms to prevent the b when the drivin belt is not in position on the shaft to'hol .the same in place.

.The dressing roll 25, see Fig. 4, is constructed of acylinder provided at each end with a head 26 26 fitted tightly therein, the whole being mounted on a shaft 27 which extends through and is fixed to both heads. Bearing blocks 23-23 are fitted onto said shaft at each end thereof, each of said blocks being provided with an annular groove 2828 for the reception of the forked ends of'the extension arms 12 and 13, and the edges of the slotted portion 43 of'the dust guard are adapted to fit into the annular grooves 29-29 which are also formed in said bearings. r

' A longitudinal slot 30 is cut through the shell of the roll into which the ends of the cutting or polishing material are passed to he engaged by the jaws 31 and 32.0f the holding clamps. Within the roll on one side of the slot 30 is a spring clamp 33 which may be pressed inward by the push button 34 to allow one end of the abrasive material to be passed between it and the inside of the roll. This abrasive material is then wrapped around the roll and its opposite end is secured between'the two jaws of the clamp which automatically operate to hold it tightly around the roll and take up any slack due to stretching or yielding of the same. This automatic clamping mechanism consists of the said main jaw 31 rotatably mounted in bearings in the cylinder heads, and an auxiliary jaw 32 rotatably mounted on the axle of the main jaw. Around this axle are two coiled springs 35, one end of each being secured to said axle and the other end of each to a fixed support, whereby the tension of the same serves to rotate the jaws to tighten the material around the roll. he auxiliary jaw 32 is rotatably secured to the main jaw 31 by a pair of rings 35, each ring is provided with a finger 36. Extending around from the back side of the main jaw to the back side of the auxiliary jaw is a flat spring 37, the tension of which serves When it is desired to open these jaws a key or other suitable operating handle is inserted into the recess 38 in the axle and by turning the same to the left against the tension of springs 35, the fingers 36 on rings 35 meet the stop pins 39 causing the two jaws to separate, and permitting the insertion of one end of the abrasive material, whichwill be earings from dropping out.

clamped and held firmly upon releasing the main jaw, all loose'ness and slack being at once taken up by the-tension of springs 35.

a pin 47 which extends through the hood and into-a corresponding hole in the holder. As

many of these spring clasps may be provided as required to hold the sides of the hood and holder in position. When it is desired to remove the hood or the holder the lower ends of the spring clasps are simply drawn outward completely disengaging the two parts which may then be readily removed.

Slots 43 are formed in the ends of hood 41, the edges thereof being designed toengage grooves 29 formed in the bearings VVhen the holder 40 is secured in position, the top edges of the end walls thereof are located a very short distance below said bearings 23, as shown... In this manner the hood is free to rock upon bearings 23 and at the same time a slight vertical movement is also permitted, whereby the dressing roll is allowed to conform to any inequalities in the surface being acted upon. A longitudinal opening 44is also formed in the bot-. tom of the holder 30 of sufficient width and length to allow the roll to work therethrough, and provide a proper clearance around the same. Inclining upward from either side-of this slot are inwardly extending shelves 4545 which serve to form 'pockets to receive and retain all waste material cut away by the operating roll. The lips of this holder are shown as being in contact with the surface acted upon soas to more effectively gather up the waste material as they'are moved along the surface. The advantage of this two part construction is that these shelves may be brought close to each other and to the point of contact of the dressing roll, whereby the dust and material removed from the surface or floor will be drawn through the narrow space be tween the roll and over the shelf into the pocket by the suction due to the rapid motion of the roll.

At 60 is a forwardly extending resilient bar on which is adjustably mounted a weight 61, which serves the double purpose of regulating the pressure of the dressing roll on the floor and of checking any' tendency of the roll to vibrate. The bar is made resilient so that the weight thereon may vibrate out of harmony with the vibrations of the roll, whereby the vibrations of both are mutually checked,thus causing/the roll to.

run smoothly upon its Working surface; This weight is adapted to be moved either forward or back to regulatev the pressure of the operating roll upon the floor.

At 62 is a bar fixed to the motor truck at 63, its opposite end being arranged to pass loosely through a slot in the cross bar 15 whereby the roll may be raised from the floor by pressing down the operating handle when desired? It is found in practice very desirable in floor finishing machines. to be able to finish the floor of bowling alleys absolutely level, and I have therefore provided a leveling attachment for my machine which consists essentially of members 49-49 mounted to move parallel with the bowling alley on wheels 50-50 which (roll on the tracks 51-51. A transversecross bar is supported from these members at either end by the frames 53-53. The, hangers 54-54 are suspended from thisj transverse bar by the wheels 55-55 and j 'tiil'e connected to the roll arms 12 and 13 and are thus adapted to carry this operating roll transversely across the face of the alley to be finished. It will be seen by this construction that the operatingroll is guided lengthwise of the alley on the tracks 51-51 and transversely across the alley on the bar-"52. Suitable means for vertical adjustmerrtigof the roll, not shown, are provided whereby tlie engagement ofthe same with the floor may be nicely adjusted.

-Itwill be seen that by the use of a device of this construction a floor may be finished absolutely level.

In the operation of ray-improved fioor finishing machine the truck on which the motor is carried is provided with an operating handle 56 which is pivoted to the wheel axle 57 and is provided with a rest pin 58 which may be caused to engage the truck so that bypressing down on the operating handle the forward end of the truckand the operating roll may be lifted from thefloor through its flexible connecting member 62. This operatingroll is preferably driven from the motor by two belts, one at each end thereof, one belt, 59, only,

'however, being shown in these drawings.

My improved floor finishing machine is of a simple and practical construction and by means of its swiveling frame it will automatically follow the contour or unevenness in the surface operated'upon and thereby render a machine of this character very effective where rapid cleaning and smoothing is desired, rather than a level surface.

Having thus described my invention, what I claim as new and desire tosecure by Letters Patent, is:-

1. In a surfacing machine. the-combination of a truck, a motor carried by said truck,

dressing roll mounted in said frame whereby said roll may have a vertical motion independent of that of said truck, means for driving said roll from said motor, and means whereby the axis of the roll may swing out of a line parallel with the axis of the shaft on which the same is pivotally hung. Y

2. In a surfacing machine, the combination of a truck, a motor carried by said truck, a frame rotatably hung at one end on the motor shaft bearings, a dressing roll mounted in the opposite end of said frame, a belt for transmitting. a rotory motion from said motor to said roll, and means whereby the axis of said roll ma' be'free to swin out of a line parallel wlth the axis of the driving motor shaft.

3. In a. surfacing machine, the combination of a truck, a motor carried by said truck, a frame pivotally connected to said truck, said frame being constructed in two parts and connected together by a swivel pin wherebyone portion may oscillate on the other, a dressing roll mounted in the oscillating portion of saidframe, and means 3 for driving said roll from said motor.

4. In a surfacing machine the combination of'a truck, a motor carried by said truck, a frame pivotally connected to said truck,.said frame being constructed in two parts and connected together by a swivel pin whereby one portion may oscillate on the other, means also in said frame for preventing said oscillating motion, a dressing roll mounted in the oscillating portion of said frame, and means for driving said roll from said motor.

5. In a surfacing machine the combination of a truck, amotor'carried on said truck, a frame pivotally hung at one end on the motor shaft bearings, a dressing roll mounted in the opposite end of said frame, a belt for transmitting a rotary motion from said motor to said roll, said frame being constructed in two parts and connected together by a swivel pin whereby one portion may oscillate on the other, and means in said frame whereby the strain of the driving belt is received and the oscillatingmotion facilitated.

6. In a surfacing machine,'t-he combination of a motor, a motor truck, a dressing roll pivotally hung and adapted to oscillate about the axis of the motor shaft, means whereby said roll may oscillate on an axis at right angles to the motor axis tofollow the contour of the floor. independent of the movement of the truck, and means for transmitting power from said motor to said dressing roll.

. In a surfacing machine, the combination of a motor, a motor truck, a dressing roll pivotally hung and adapted to oscillate about the axis of the motor shaft, means whereby said roll may be ermitted to oscillate on an axis at right ang es to the motor axis, means for preventing said oscillation, and means for transmitting power from said motor to said roll.

8. In a surfacing machine, the combination of a truck, a motor carried by said truck, a frame-pivotally connected tosaid truck, a dressing roll mounted in said frame whereb said roll may'have a vertical motion in ependent of that of said truck, means for drivmg said roll from said motor, means whereby the axis of the roll may swing out of a line parallel with the axis of the truck wheels, and means whereby the roll may be raised from the floor when desired.

of said roll sai 9. In a surfacing machine an operating roll, bearings supported to permit either or both ends of said roll to be independently or jointly elevated? 6r depressed to follow automatically the"contour of the surface with uniform pressu 'e, an abrasive covering detachably secured t said roll, a waste colroll, an abrasive covering detachably secured thereto, a Waste collector adjustably controlled by the bearings of said roll, said collector being provided with a longitudinal slot through its bottom portion, a broad shelf having an inclined surface extending back from a comparatively sharp floor engaging edge on each side of said slot, the surface of said shelf being in close proximity to the surface of the roll formin a comparatively restricted passageway, w ereby a current of air is produced to carry the material removed from the surface operated upon through said opening and deposit the same in the space-behind said shelf.

11. In a surfacing machine, the combination of a rotatable dressing roll, a frame for said roll, a removable attachment to said frame, a longitudinally movable truck supporting a cross bar, said cross bar being adapted to support said removable attachment whereby the movement of said dressing roll over the surface to be finished may be (fIOIltI'OllGd to produce a perfectly plane surace.

12. In a surfacing machine the combination of a truck, a motor driven dressing roll, a frame in which said roll is mounted, means whereby said roll may have a vertical motion independent of that of said truck,

"a vibratable spring bar attached to said frame, and a weight adjustably mounted on said bar whereby said weight may be set to absorb or counteract the vibration of the dressing roll.

13. A surfacing machine comprising a truck, a motor thereon, a swivel frame "pivotally connected thereto, a surfacing roll mounted in said swivel frame whereby either or both ends of said roll may be freely elevated or depressed independently or simultaneously to automatically follow the contour of the surface with uniform pressure,

and means for driving said roll from said,

motor.

In testimony whereof I aflix my signature Witnesses:

HOWARD E. BARLow, E. I. OGDEN. 

